fixed bug & finished

Robber.java

@@ -5,6 +5,11 @@ public class Robber {
     private int y;
     private int moveNum;
 
+    public Robber(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
     public void setY(int y) {
         this.y = y;
     }